The decentralized nature of crypto may clash with Facebook's centralized model.

Donald Trump and Kim Jong-un are back to sleeping in their own beds after their summit in Vietnam ended without an agreement. Trump is eager to emphasize that relations with Kim remain sunny. "This wasn't a walk away like you get up and walk out," he said. "No, this was very friendly. We shook hands," noted the president.

Two days later, how are the major players viewing the walkout in Hanoi?

Happy With How Things Went

China – Beijing wants the Korean Peninsula quiet, particularly as President Xi Jinping focuses on advancing trade talks with Trump. There's no American armada steaming toward trouble, no Korean rockets' red glare, and the two sides will keep talking.

Trump doubters – Some Americans, and US allies, feared Trump would offer Kim big concessions in exchange for vague promises. The president made clear he had no intention of doing that. Sanctions remain firmly in place.

Vietnam – Hanoi proved it could host a major international gathering on frighteningly short notice. The country's expanding economy and solid relations with the US offer a favorable contrast with North Korea.

Wary About What Comes Next

Japan – Fears that Trump would ease pressure without promises from Kim to scrap missiles that can hit Tokyo were not realized. But talks will continue at a lower level, and Japan will watch anxiously to see what comes next.

Unhappy With How Things Went

South Korea – President Moon needed a breakthrough to expand economic cooperation with the North, a key component of his domestic political agenda. The summit's failure forced him to call off a major announcement on the "Future of Korean Peace and Prosperity" he hoped would advance peace and boost his political standing.

Kim – If Kim was hoping Trump would give a lot to get a little, he left disappointed. So, what's plan B?

Trump – With so much trouble awaiting him back in Washington, Trump needed something he could sell as a major breakthrough. His refusal to move first will play well with North Korea skeptics, but Trump needed a big win to distract from the gathering storm back in Washington.

What's Next?

The summit's failure doesn't close the book on nuclear talks, but Trump's refusal to lift sanctions before Kim takes bigger steps leaves North Korea's leader with tough decisions on how to move forward. Though North Korea's foreign minister disputes Trump's account of what North Korea wanted and offered, Trump says Kim has promised to hold off on nuclear and ballistic missile tests to keep open the hope for future progress.

But there's nothing in writing. Kim could restart testing to try to force Trump to offer him something new. Or maybe he calculates that events in Washington ensure Trump won't be around much longer.

This past year we've addressed some of history's most important innovations in our Today in Technology series. Our focus is always on what we can learn from the past and apply to today's issues.

Today we look back at more recent history – the past 12 months, to be exact. It was a momentous year for technology, with the phrase "Techlash" commonly used to refer not just to one but several issues which gave the public pause about the role of technology and the tech sector in people's lives. As the calendar turns to 2019, we consider what the last year will likely mean to what will surely be an important new year. Read our list of developments to think about.

1. PRIVACY: Privacy protection deepens in Europe and spreads to the United States

2. DISINFORMATION: The controversy roils social media

3. PROTECTIONISM IN THE PACIFIC: Tech comes between the United States and China

Read the full list

– Brad Smith, President of Microsoft and Carol Ann Browne, Director of Communications

Wednesday's testimony before the House Oversight Committee from Trump's former personal attorney, Michael Cohen, marks an important milestone in the fight over Trump's future.

To better understand the most divisive US political drama in decades, we divide the Trump investigation story into three broad phases:

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Pakistan's Prime Minister Imran Khan made a dramatic plea this week to ease tensions with his country's neighbor and rival: "I ask India: with the weapons you have and the weapons we have, can we really afford such a miscalculation? If this escalates, things will no longer be in my control or in Modi's."

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While much of the world focused on the Trump-Kim summit, the Michael Cohen testimony, and threats of war between India and Pakistan, there were lots of big developments in other places this week. Don't believe us? Check out this sample, with details on why we can't ignore them:

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Juan Guaidó, the Venezuelan opposition leader whom most Western countries now recognize as president, says he's coming home.

Last week he defied a court order by crossing into Colombia to lead an ultimately failed attempt to bring humanitarian aid into Venezuela. Yesterday, he flew from Bogotá to Brasilia to see Brazil's President Jair Bolsonaro.

But his imminent return to Venezuela sets up the next big showdown with President Nicolas Maduro, who still controls the government and armed forces. The stakes are high for both men.

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Hard Numbers

40: "Saudization," a long-running Saudi government program designed to draw more Saudis, particularly young people, into the private sector workplace requires that companies covered by its rules ensure that 70 percent of their employees are Saudi nationals. It hasn't worked. Foreign workers occupy 90 percent of all private sector jobs, half the Saudi population is under 25, and youth unemployment stands at 40 percent.

70: Net migration by EU nationals to the UK (arrivals – departures) has fallen by 70 percent since Britons voted in 2016 to leave the EU, according to a new report from the UK Office of National Statistics.

3: Italy's intelligence agency warned this week that attacks on migrants and minorities could rise ahead of elections for the European Parliament in May. Racially motivated attacks in Italy tripled between 2017 and 2018.

92,000: The entry fee to become a candidate in Ukraine's presidential election is $92,000. So there's good reason to wonder whether one candidate, a man called Yuriy Volodymyrovich Tymoshenko, had help paying the fee from someone hoping he'll steal support from confused voters who prefer one of the current frontrunners, former Prime Minister Yulia Volodymyrivna Tymoshenko. Yuriy has a family income of $10,000.

Here are some important tips to use your bonus wisely.

It's Money in 60 Seconds with Sallie Krawcheck!


And go deeper on topics like cybersecurity and artificial intelligence at Microsoft on The Issues.