KABUL, 13 July 2021 (TON): Afghanistan's Kabul airport has been fitted with an air defence system to counter incoming rockets, officials said on Sunday, as the Taliban pressed on with a blistering offensive across the country.

Washington and its allies are due to end their military mission in Afghanistan at the end of next month, even as the insurgents say they now control 85 per cent of the country, a claim impossible to independently verify and disputed by the government.

The fundamentalist group's rapid gains in recent weeks have raised fears about the security of the capital and its airport, with NATO keen to secure a vital exit route to the outside world for foreign diplomats and aid workers.

The interior ministry said in a statement "the newly installed air defence system has been operational in Kabul since 2:00 am Sunday. The system has proven useful in the world in repelling rocket and missile attacks."

Interior ministry spokesperson Tariq Arian told AFP it had been installed at the airport, though officials did not offer details about the type of system or who had installed it.