A US Treasury report said a programme to block US investment going to advanced tech sectors in countries deemed to be a potential security threat would cost $10 million, if set up this year

China has a 'stunning lead' in most of the 44 critical emerging technologies, an Australian Strategic Policy Institute study said, adding that democratic nations need to collaborate more

The firm also plans to help establish a Russian production site for the drones which are similar to Iran's Shaheed-136 and can carry a 35-50kg warhead

"I hope we are going to get to the bottom of this, but I make no apologies for taking down that balloon," the US president said

US and Chinese officials have been discussing a meeting between their senior diplomats – possibly in Europe this weekend – to cool tension over the 'spy balloons' saga

Discussions on the deal to buy 470 jets were held a stone's throw from Britain's Buckingham Palace and culminated in a celebration over coastal Indian curries

A fourth object flying at high altitude was taken down over Lake Huron in the US on Sunday, intensifying tensions between Washington and China. Taiwan says it has seen many spy balloons

Another unidentified object flying high over Canada was shot down on Saturday, following a similar strike on Friday. The US has also blacklisted six firms linked to China's 'spy balloons' programme

Officials say successful recovery of the balloon's debris could give the United States insight into China's spying capabilities

China lodges a complaint after airship 'attack', but US officials say they have monitored at least four other spy balloon flights over the US in recent years, plus ones over Central and South America

The 'special flight permit' from the Civil Aviation Administration of China will allow the Xpeng Aeroht X2 to undertake a manned flight

Air India – taken over by Tata Group a year ago – was due to place an order on Friday for 220 Boeing jets, after months of tough talks, sources said