Ukrainian crisis: Trump's threats Russia

The relationship between Moscow and Washington, undermined by the crisis between Ukraine and Russia.

Donald Trump has threatened to cancel his scheduled meeting this weekend with his Russian counterpart Vladimir Putin, at the G20 summit in Argentina.

Petro Poroshenko does not hesitate to evoke the "threat of a large-scale war" with the Russian neighbor, who would have "increased considerably", according to the head of the Ukrainian state.