American Express is suspending operations in Russia and Belarus due to the events in Ukraine, the company said.

“As a result, American Express cards issued worldwide will no longer work in stores or ATMs in Russia. In addition, cards issued in Russia by Russian banks will no longer work outside the country in the global American Express network. We are also terminating all business operations in Belarus,” the company’s website says.

American Express management hopes for a peaceful resolution of the crisis, but in the meantime it will work to support customers.