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

Former Republican Sen. Ben Sasse announced Tuesday that he's been diagnosed with stage 4 pancreatic cancer. CNN's Brian Todd reports. Read more: https://cnn.it/4jvULWp | CNN