U.S. President Donald Trump spoke with German and Italian leaders on Monday, a White House official said, ahead of a summit of the Group of 20 leading economies this week that could expose his sharp differences with world powers on trade and other issues.
Trump is preparing for the two-day G-20 summit that starts in Hamburg on Friday, just over a month after a G-7 summit in Sicily showed deep divisions between Trump and other Western leaders on climate change, trade and migration.
A fractious first NATO summit with Trump also left European allies wondering where the military alliance goes next.