CNN chief White House correspondent Jim Acosta likened what he described as the erratic nature of President Trump's press conference at the G-7 summit to a cat chasing a laser pointer.

One example he used dealt with Trump floating the idea to invite Russian President Vladimir Putin back into the G-7 next year. The country was expelled from what was then G-8 after it annexed Crimea from the Ukraine. Another example Acosta used was about Trump's handling of climate change questions.

"The president skipped a meeting on climate change here at this G-7 summit and so, as if often the case with these press conferences with the president, it is like a cat chasing a laser pointer, you know, when it comes to trying to get the President to answer a direct question," Acosta said.

"When he was pressed on whether or not there were these calls with Chinese officials, the President looked over to his Treasury Secretary Steve Mnuchin who got up in the middle of this press conference and tried to assure all of us that there were these conversations, these calls that went on," he continued.

Acosta said Trump's team has had "inconsistency after inconsistency" since they had arrived at the annual meeting.

On the topic of having inviting Russia to the G-7, Trump said Sunday the members of the group "had a very good discussion on Russia and President Putin; a lively discussion, but really a good one."