Ukrainian President Volodymyr Zelenskyy said Monday the United States is offering his country security guarantees for a period of 15 years as part of a proposed peace plan.
A raid on a suspected safe house for the terrorist group Islamic State set off a clash that killed the police officers as well as six Turkish militants.
The drills came after Beijing expressed anger at U.S. arms sales, and a statement by Japan's prime minister saying its military could get involved if China were to take action against Taiwan.
President Donald Trump says Ukraine and Russia are "closer than ever before" to a peace deal, even as Russia launched another round of attacks on Ukraine while Ukrainian President Volodomyr Zelenskyy flew to the United States.
