In the frigid forests of the Arctic Circle, not far from the border with Russia, CNN's Isobel Yeung sees how Finnish border guards are training for the threat of war. Stream the full story on the CNN app. | CNN International

Two helicopters collided midair over southern New Jersey, resulting in one fatality and one person injured, officials said. Read more: https://cnn.it/4q7Iz0j | CNN International

China's People's Liberation Army released video after it launched military drills around Taiwan, saying it aims to send a "serious warning" against any push for Taiwanese independence and "external" forces interfering with the island. | CNN International