The US marks 25 years since the 9/11 attacks with memorial events across the country, with President Donald Trump attending a ceremony at the Pentagon.
Canada’s Prime Minister Mark Carney is taking a cautious approach to new US trade measures while keeping negotiations open.
Meanwhile, Russian attacks on Ukraine have intensified, with civilian casualties and damage to infrastructure reported.
In India, rising oil prices and global tensions are putting fresh pressure on stocks and the Indian rupee.
The Nifty and Sensex came under heavy pressure while the rupee traded near 95.5 per US dollar.