Trump reviews Iran’s ‘red lines’ as Tehran’s top diplomat engages Russia’s Putin

President Trump is reviewing Iran’s ‘red lines’ as Iranian Foreign Minister engages with Russia’s Putin in diplomatic efforts to revive negotiations. The US has clarified its ‘red lines’ with respect to Iran, while Iran cites excessive demands from the US as a reason for stalled negotiations. Recent declines in ship traffic through the Strait of Hormuz are fueling concerns about energy market instability.