Ankur Desai

This is clearly very bad news for Vladimir Putin.

Steve Rosenberg in Moscow.

Next to the Middle East, Iran has reacted defiantly to President Trump's announcement that the U.S.

military will blockade all maritime traffic to and from Iranian ports in the vital shipping route, the Strait of Hormuz.

Iran's parliamentary speaker, Mohammad Bagheer Khalibaf, has said Tehran will not submit to any threat.

This comes after US and Iranian officials met in Pakistan for high-level talks at the weekend but were unable to reach any agreement.

The US military says the blockade of the Strait of Hormuz will begin on Monday afternoon.

Our chief international correspondent, Lise Doucette, filed this report from Islamabad.

At least you said with that report from Islamabad.

Well, Iran has said that any attempt by a military vessel to approach the Strait of Hormuz would be considered a violation of the two-week ceasefire and dealt with severely.

But what does that actually mean?

That's a question for our correspondent Kashaya Junaidi from BBC Persian.

Okay, just just briefly, then what other moves could there be up Iran's sleeve?

Does it have the leverage against the US to do anything else?

And who holds the cards at the moment?

The fight to improve basic sanitation and save mothers' lives in Zambia.

This is the Global News Podcast.

Peru's election authority says it will be reopening some polls after tens of thousands of people were unable to vote in Sunday's presidential election.

Widespread distrust in the country's institutions has put issues like corruption, political instability and rising crime front and centre in the campaign.

I asked BBC Monitoring's Luis Fajardo why so many Peruvians were unable to cast their ballots.