Adam Davidson

Italy's prime minister resigns – Giuseppe Conte, the caretaker prime minister appointed to mediate an uneasy governing alliance between Italy's anti-establishment 5Star Movement and the right-wing Lega party, resigned on Tuesday. Rather than wait for a no-confidence vote triggered by the rightwing Lega Interior Minister Matteo Salvini, Conte stepped down on his own terms. Salvini, who's popularity has been rising, had hoped that by triggering snap elections he could get himself appointed prime minister, will now have to wait for Italy's president, Sergio Mattarella, to decide what comes next. While Lega and smaller right-wing allies want a new vote, center and left-wing parties are apparently working to see if they can form a majority coalition – perhaps including 5Star -- that would allow Mattarella to appoint a new government without fresh elections. We're watching to see how the dust settles in Europe's third-biggest economy.

300: The US tested a new medium-range cruise missile on Sunday that flew more than 300 miles. This marks the first time the US has tested a weapon that would have violated the Intermediate-Range Nuclear Forces Treaty, a Cold War era pact that was officially abandoned three weeks ago, sparking fears of a new global arms race.