US stocks were on a roller-coaster on Tuesday, falling early in the day by 100 points after Trump Jr's release of emails, which indicated that the Trump campaign knew of the Russian government's efforts to help Trump and hobble Clinton in the November elections. A Russian government-linked lawyer had offered Donald Trump's son access to "sensitive information" against Hilary Clinton.

Concerns that the Russian controversy will impact the US President's ability to govern have worried markets. The Dow recovered over the day, ending on a slight gain.