Your World Tonight

As fighting appears to intensify in the Middle East, so does the rhetoric. U.S. President Donald Trump issued an ultimatum to Iran - telling Tehran if it doesn't allow ships through the Strait of Hormuz, then the U.S. will attack Iranian power plants. Iran's military is now calling Trump's bluff, threating to strike back.

Also: Power is slowly returning in Cuba after a nation-wide collapse of the grid left millions in the dark. It's the third blackout this month. Cuba is in the midst of an energy crisis brought on by a U.S. oil blockade. CBC News is on the ground in Havana, speaking to Cubans about how they are coping.

And: In a controversial move, Donald Trump has ordered ICE officers to help workers at the nation's airports. It comes as a partial government shutdown drags into a fifth week, leaving TSA workers without pay, and creating massive lines for travellers. And with the Spring Break travel rush looming, Congress is scrambling to find a solution.

Plus: Alberta closes two safe consumption sites, Gen Z picking up knitting, The Juno nominated music made from brain waves, and more.

Israel's Defence Minister says Israeli and U.S. airstrikes on Iran will be stepped up, significantly in the coming days - just a day after President Donald Trump mused about "winding down" the war. Meanwile, at least one managed to break through Israel's air defences, hitting a building near the country's main nuclear facility. Israel is promising to retaliate, while issuing new warnings about Iran's long-range capabilities.

Also: In Hawaii, the island of Oahu has been experiencing catastrophic flooding caused by a "Kona low" - a seasonal sub-tropical cyclone. The flooding has caused officials to issue an evacuation order for thousands of people in the North Shore. It's the worst flooding Hawaii's most populous island has seen in twenty years.

And: Complaints about Canada's big telecoms reached an all-time high last year. According to a recent watchdog report, More than 23-thousand Canadians lodged complaints, with billing problems topping the list. The CBC's Marketplace went inside the system, hearing from whistleblowers on the pressure they face inside call centres.

Plus: France's local elections, Hong Kong rethinking the use of bamboo scaffolding, Melting of the world's oldest and largest iceberg, and more.

Tehran threatens to attack tourist sites and recreational locations worldwide if the U.S. and Israel keep up the bombardment of Iran. The Iranian military says it will hunt down U.S. and Israeli officials. A statement allegedly from the new supreme leader says Iran’s enemies are being defeated.

And: Cuba has been buckling under an oil blockade imposed by the US over the past three months. The UN has warned of an impending humanitarian crisis. CBC is on the ground in Havana. As people in the country struggle to buy food, the Cuban government remains defiant.

Also: Ontario’s government wants to limit the price of resale tickets for sporting and entertainment events to no more than their original value. Premier Doug Ford already scrapped an anti-scalping law in 2019 that would have capped resale prices at 50 per cent above face value. At the time, his party said that law was unenforceable.

Plus: Canadian Muslim families mark Eid amid worries about the Middle East war, Chuck Norris dead, Trump calls NATO nations cowards, and more.

It's been a day of escalating military strikes, soaring costs and political posturing on the Middle East warfront. The attacks and counter attacks in Iran and the Gulf are rattling nerves and economies around the world. But the U.S. president says he's got it all under control.

And: Pierre Poilievre sits down with Joe Rogan — the world’s most popular podcaster — to discuss... you guessed it: politics and the Canada/U.S. relationship.

Also: How are you feeling? According to the World Happiness Report, Canadians are feeling less happy than they used to. The country has slipped down the list of the happiest countries — from 18th to 25th. The decline seems to be linked to younger Canadians and the use of social media.

Plus: Extortion in Edmonton, Hezbollah strongholds, and more.

Central bankers in Canada and the U.S. are warning the worst economic impacts of the Middle East war are still to come. Both decided to hold interest rates steady today, amid the choppy waters of international conflict. Canada’s economy is getting hit from multiple angles — jobs are down and prices are up.

And: Police have arrested two teens — one in Nova Scotia, another in Manitoba. They are accused of planning simultaneous attacks at their high schools. The tipoff came from international police.

Also: Where does the Prime Minister live? Until 2015, the answer was easy — 24 Sussex, in Ottawa. But when he was elected, Justin Trudeau chose not to move in. The building had asbestos, lead, and rodents. Instead, he chose to live in Rideau Cottage — a smaller house behind the Governor General’s place. Now CBC News has obtained an internal government memo suggesting that house isn’t suitable either.

Plus: The director of U.S. national intelligence grilled over what led to war with Iran, a building owner in Montreal is charged with seven counts of manslaughter for deadly fire, and more.