US President Donald Trump will postpone a second meeting with Russian President Vladimir Putin until next year after the federal investigation into Russian election meddling is over, national security adviser John Bolton said on Wednesday. "The President believes that the next bilateral meeting with President Putin should take place after the Russia witch hunt is over, so we've agreed that it will be after the first of the year,"Boltontold reporters. The White House had earlier said that Trump would meet with Putin at the White House in the fall. Trump rejected the criticism sparked by his Helsinki news conference with Putin and said he misspoke in a series of flip-flops over the summit. US Secretary of State Mike Pompeo on Wednesday vigorously defended President Donald Trump's foreign policy actions as senators from both parties denounced Trump's behavior, particularly at his recent summit with Russia's Vladimir Putin.