New Delhi, April 7 -- US stock futures traded lower in Tuesday's session as investors continued to track developments in West Asia amid US President Donald Trump's deadline for Iran to reopen the Strait of Hormuz and agree to a ceasefire, or face military retaliation if Tehran fails to meet the Tuesday deadline.

Futures of the three key indices-the Dow Jones Industrial Average, the S&P 500, and the Nasdaq-were down in the range of 0.4%-0.6%.

In response to Trump's latest threats, Iran said it would not agree to a 45-day ceasefire proposal and reiterated that it seeks a permanent end to the war. Tehran also warned of potential retaliation against infrastructure belonging to US allies in the Gulf.

A senior Iranian source told Reuters tha...