If the US is really back, as President Biden keeps saying, what is it back to do? That was one of the biggest questions at the G7 summit in the United Kingdom last weekend, the first stop on the first trip abroad of Biden's presidency. The G7 tackled the world's biggest problem by pledging to donate 1 billion doses of the vaccine to COVAX, with 500 million of those coming from the United States. Taxes, climate change, China, and Russia were on the agenda, too. Biden's trip went better than Trump's last big outing, to be sure. Ian Bremmer recaps this year's historic G7 meeting.

Watch the GZERO World episode: Has Biden convinced the G7 "America is back"?