NATO Secretary General Anders Fogh Rasmussen and Turkish Foreign Minister Ahmet Davutoglu have agreed to convene an urgent meeting of NATO members after a mortar bomb fired from Syria hit a Turkish border town, killing a woman and four children.
A NATO official told Reuters that its ambassadors will meet under NATO Article 4, which is used "when a member state feels it territorial integrity is under threat".
The meeting is due to take place tonight.
More top news
Thousands are protesting in Barcelona to demand the release of two Catalan pro-independence activists jailed by Spanish authorities.
The mogul has reportedly agreed to permanently leave the company he co-founded after a flood of sex abuse complaints.
A 20-year-old man who died in a triple stabbing outside Parsons Green Tube station has been named by police.