Trump, without evidence, cites Ukraine ties to ex-rival Clinton

U.S. President Donald Trump speaks to departing White House interns after posing for a photograph with them in the East Room of the White House in Washington, U.S., July 24, 2017. REUTERS/Joshua Roberts

WASHINGTON (Reuters) - U.S. President Donald Trump on Tuesday blasted the investigation into alleged Russian meddling in last year's U.S. election and raised questions, without offering evidence, about Ukrainian support for his Democratic presidential rival, Hillary Clinton.

In a pair of early morning tweets, Trump also said U.S. Attorney General Jeff Sessions had "taken a very weak position" towards the Democratic presidential nominee and cited "Ukrainian efforts to sabotage Trump campaign - quietly working to boost Clinton'."