2018 G20 Buenos Aires summit
After Kremlin spokesman Dmitry Peskov said on Wednesday the meeting between U.S. President Donald Trump and Russian President Vladimir Putin during the summit is still on, while flying to Argentina, President Trump tweets that, after conferring with his top National Security advisers, he decided to cancel the meeting, adding that it was not a good time since Russia has not returned the ships and sailors to Ukraine. Less than an hour earlier, Trump said that he would "probably" meet Putin and that he believed it was "a good time to have the meeting."
Sources: Reuters USA Today''² USA Today