Trump blames Russia rift on US probe, Moscow agrees

Donald Trump today blamed bad relations between Moscow and Washington on the US investigation into alleged Russian election meddling -- and Russia promptly agreed.

Setting the scene just hours ahead of his summit with Vladimir Putin, Trump took to Twitter to lash out at US special prosecutor Robert Mueller's probe.

"Our relationship with Russia has NEVER been worse thanks to many years of US foolishness and stupidity and now, the Rigged Witch Hunt!" Trump tweeted, with a swipe at his White House predecessors.

Many Twitter users expressed anger or surprise that a US leader had blamed his own country for the rift, despite Russia's interventions in Syria and Ukraine and alleged subversion of Western elections.

But the Russian foreign ministry was delighted, jumping in through its official Twitter account to first "like" Trump's message then to retweet it with a clear response: "We agree."