Why did UK military get involved in Israeli response to Iranian attacks?

Prime Minister Sir Keir Starmer has said Britain stands with Israel, but that he is "deeply concerned that the region is on the brink”. In a televised address from Downing Street, Starmer said Iran has “menaced the Middle East for far too long” as he condemned the country's missile strikes into Israel. • Subscribe to ITV News on YouTube: http://bit.ly/2lOHmNj • Get breaking news and more stories at http://www.itv.com/news Follow ITV News on Facebook: https://www.facebook.com/itvnews/ Follow ITV News on Twitter: https://twitter.com/itvnews Follow ITV News on Instagram: https://www.instagram.com/itvnews/