"It defies logic that Putin did not know of this and that Putin did not approve of it", he said.
On Thursday, Trump reiterated his criticism of NATO in a tweet, stating, " Presidents have been trying unsuccessfully for years to get Germany and other rich NATO Nations to pay more toward their protection from Russian Federation.
Mr. Trump and Mr. Putin were slated to meet over the coming days in Finland.
Sen. Mark Warner, top Democrat on the Senate Intelligence Committee, offered Trump an ultimatum for the highly anticipated summit: make Russian interference a priority, or cancel the meeting.
This, after 12 Russian intelligence officers were indicted for allegedly hacking emails from the Clinton campaign and the Democratic Party in the 2016 election.
"If President Trump is not prepared to hold Putin accountable, the summit in Helsinki should not move forward".
Trump launched his blunt attack against Germany on the very first day of the North Atlantic Treaty Organisation summit that took place in Belgium on Wednesday and Thursday, saying it was wrong to back importing more Russian gas and not meeting the Nato's target for defence spending. The White House didn't respond to a request for further comment on whether Trump would address the indictment when he meets with Putin.
He dismissed the notion that his repeated criticism of North Atlantic Treaty Organisation would embolden the Russian president but played down his chances of success, adding: 'I'm not going in with high expectations, but we may come out with some very surprising things'.
Rosenstein said the president had been briefed on the charges earlier this week.
Trump had explicitly linked North Atlantic Treaty Organisation with a transatlantic trade row by saying the European Union shut out USA business while expecting America to defend it, singling out Germany for particular criticism.
"Supporting the new fledgling democracy in Iraq, which has been so battered, is so fragile, is a great thing for Canada to be doing ... it is dead centre in what Canada is good at", said Foreign Affairs Minister Chrystia Freeland. No Americans are involved.
Rosenstein called for unity in the face of Russian meddling. So in a sense we're competitors, not a question of friend or enemy.
"The conspirators covertly monitored the computers of dozens of DCCC and DNC employees, implanted hundreds of files containing malicious computer code, and stole emails and other documents", it said.
Some of the documents and emails were released through a website identified in the indictment only as "Organization 1" - believed to be Julian Assange's WikiLeaks.
MacKay told CBC Radio's The House today that Canada needs to keep its focus on building its military capability, contributing to North Atlantic Treaty Organisation missions and working toward other alliance goals.
Relations with the West have also been soured by the poisoning of a former Russian spy in Britain in March.