Your World Tonight

President Donald Trump says Lake Ontario will now be known as Lake America in the U.S.. The move adds insult to the injury of extra tariffs.

And: Rescue teams search for hundreds of missing people — including more than two dozen Canadians — along the Nepal-Tibet border. A torrent of water and mud ripped through several communities yesterday.

Also: Jurors have begun deliberating in the trial of a Massachusetts woman accused of murdering her three children in 2023. The case has put severe post-partum mental illness in the spotlight.

Plus: Cash bail rules in Ontario challenged, Quebec election kicks off, and more.

Two dozen Canadians are among those missing after a massive flood and mudslide on the border area between Tibet and Nepal.

And: United States Trade representative Jamieson Greer sat down with the CBC’s Rosemary Barton for an exclusive interview. He says Canadian officials are at fault for torpedoing negotiations.

Also: Meta agrees to pay up to $18 billion US to settle claims of harm alleged by dozens of states. The social media company also says it will restrict U.S. teenagers’ access to its social media to certain hours of the day. Meta was accused of designing its apps to get children addicted, misleading consumers about ‌safety, and improperly collecting the personal data of children.

Plus: Fire in Pakistan hospital nursery, AI in policing, Ohio residents on Canada trade fight, and more.

Dollar-for-dollar retaliation. Ottawa says it will match U.S. tariffs on Canada exactly. That means tariffs on $27 billion of U.S. goods. There’s also support for Canadian businesses as they brace for the impact of tariffs from both countries. And the insults and threats continue — including the U.S. president threatening to rename one of the Great Lakes, and to stop doing business with Ontario.

Plus: Legendary country singer, actor and philanthropist Dolly Parton has died.

Also: Every tackle takes a toll, and for some football players, the effects can last a lifetime. New research suggests at least one in four NFL players will develop chronic traumatic encephalopathy, and the true number is likely much higher.

And more.

Anger and frustration from politicians and citizens in both countries, and fear and uncertainty among industry. U.S. President Donald Trump has added to his tariff threats two days after he imposed 50 per cent tariffs on about $28 billion worth of Canadian goods. And the two sides aren’t even talking. Prime Minister Mark Carney says Canada will go back to the table when the U.S. shows “the right attitude.”

And: Stress and anxiety — so prevalent among youth since the pandemic — appear to be going down. We’ll have the details of a new survey of teens in Ontario.

Plus: Ukraine needs more than missiles, hospitality industry hurt by cuts to temporary foreign workers program, U.S. targets Iran economy, and more.

Political pressure is mounting on Prime Minister Mark Carney as sweeping U.S. tariffs take hold on billions of dollars worth of Canadian goods. Trade talks broke down on Friday, and now Ottawa must weigh how best to cushion the economic blow - and how to retaliate strategically against Washington. We'll have full coverage of the renewed Canada/U.S. trade tensions - with reaction from U.S. officials, business leaders, and Canadians across the country.

Also: Today marks 150 years of Treaty 6. Its an agreement signed between the British Crown and more than 50 First Nations. It gave those First Nations rights to health, education, and use of the land in portions of what is now Saskatchewan and Alberta. But there is growing concern that the threat of Alberta separation -- could put the Treaty at risk.

And: Twice a year, millions of monarch butterflies make the long voyage between Canada, the U-S and Mexico. Habitat loss has led to fewer and fewer monarchs taking part in that semi-yearly migration. But the endangered species has seen a population rebound on the Praries. You'll hear what's causing it.

Plus: Mental health challenges among Indigenous boys and young men, and more.