Six American F-15 jets landed in an Estonian airbase on Wednesday for deployment for a week and a half, as the NATO transatlantic military alliance reinforced its eastern flank due to frictions with Russia over Ukraine.
NATO said on Monday it was putting forces on standby and reinforcing eastern Europe with more ships and fighter jets, in what Russia denounced as Western "hysteria" in response to its build-up of troops on the Ukraine border.
The Monday announcement did not mention the U.S. jets being deployed in Estonia.
"The six fighter jets will be deployed until the end of next week", said a spokesperson at the Amari airbase in Estonia.