The US is pressuring Iran's remaining trading partners to sever banking and aviation ties with Tehran. Treasury Secretary Jonathan Burke has traveled across the Middle East and Europe, warning countries that they must choose between trading with Iran or maintaining ties with Washington.

The US is pressuring Iran's remaining trading partners to sever banking and aviation ties with Tehran. Treasury Secretary Jonathan Burke has traveled across the Middle East and Europe, warning countries that they must choose between trading with Iran or maintaining ties with Washington.

The pressure campaign has already led to a flight ban, banking restrictions and further isolation of Iran.

Oman, the United Arab Emirates, Turkey and other countries have taken action against Iranian airlines and banks, while more than 50 countries have been contacted by US officials.

Source: WSJ