CBC News has learned Prime Minister Mark Carney raised possible Keystone XL pipeline revival in meeting with US President Donald Trump. 

Chicago mayor Brandon Johnson urges courts to overturn Donald Trump's order top send in the National Guard. 

Ukrainian military officers warn the Kremlin is waging a shadow war, far from the frontlines, involving Ukrainian citizens and IEDs. 

Israel and Hamas continue indirect negotiations to reach a ceasefire agreement. 

VIA Rail has had to offer $31 million in travel credits to delayed passengers since Canadian National imposed speed limits at its crossings last year. 

Susumu Kitagawa, Richard Robson and Omar M. Yaghi share Nobel Prize in chemistry for development of metal–organic frameworks.