Who's who: Trump aides, associates drawing attention
Trump's chief strategist and senior counselor has been the target of the left since he formally joined Trump's campaign, thanks to the far-right views of the website he used to run, Breitbart News.
The day before, he suggested that the use of barrel bombs by Syrian President Bashar Assad's government might lead to further military action.
The spokesman says Manafort's lobbying work was not conducted on behalf of the Russian government and began before Manafort started working with the Trump campaign.
Before taking over Trump's campaign last May, Manafort worked for a slew of foreign clients, including a pro-Russian political party in Ukraine and Russian billionaire Oleg Deripaska.
In 2005, he proposed an ambitious plan to promote the interests of "the Putin government" and undermine anti-Russian opposition across former Soviet republics, the Associated Press has reported.
Page also met with a Russian intelligence operative in 2013 and provided him documents about the energy industry, according to court documents from a 2015 prosecution alleging a Cold War-style spy ring in New York.
Trump's former national security adviser, Flynn was ousted in February for misleading Vice President Mike Pence about the nature his communications with Russian ambassador Sergey Kislyak, the White House said.
A staunch and early Trump supporter, Flynn is a retired United States Army lieutenant general and was the former director of the Defense Intelligence Agency.