KATHMANDU. The United States has claimed that the sanctions imposed on Iran's aviation sector have been successful. The US had imposed sanctions on Iran's entire aviation sector in early September. US Treasury Secretary Scott Bessent claimed that this was part of a pressure campaign that would lead to Iran's 'economic strangulation'. Washington had given foreign companies until September 23 to comply with this ban. Bessent then claimed that all Iranian airlines would be 'shut down worldwide'. He said, 'If they land, do not give them fuel, do not provide landing services, do not sell tickets. Otherwise, you will be removed...