This is the Global News Podcast from the BBC World Service.

I'm Janet Jolie and at 13 hours GMT on Friday the 13th of September,

these are our main stories.

Moscow announces it has expelled six British diplomats as President Putin warns the West against allowing Ukraine to use long-range missiles on Russia.

China is to raise its retirement age, one of the lowest for a major economy.

Workers at the troubled plane maker Boeing have gone on strike,

rejecting a pay-offer of 25%. Also in this podcast we hear about some of science's wackiest ideas including putting

pigeons in missiles to guide their flight paths.

We start with high stakes diplomacy. Tensions have risen as the British Prime Minister and the US President prepare to hold talks in Washington

about allowing Ukraine to use long-range missiles for strikes deep inside Russia, after reports

that Iran was now supplying hundreds of missiles for Moscow to use.

President Putin warned the West that giving long-range weapons to Ukraine

would mean that NATO countries were at war with Russia.

Yes, there is this decision. NATO countries were at war with Russia.

If this decision is made, it will mean nothing other than direct participation of NATO

countries, the United States, European countries, in the war in Ukraine.

It is their direct participation and this of course significantly changes the very essence of the conflict.

This will mean that NATO countries, the

United States, European countries, are fighting with Russia.

Then hours after Mr Putin's warning, Moscow announced that it had expelled six British

diplomats accusing them of spying and sabotage. Here's how Russian state television broadcasts the news to viewers.

Britain's diplomatic, as the political diplomats have been

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