![epa06662443 (FILE) - A handout photo made available by the British Ministry of Defence showing the British Royal Navy submarine HMS Astute leaving Barrow-in-Furness for sea trials on 15 November 2009. Media reports on 11 April 2018 that British Prime Minister, Theresa May ordered British Royal Navy submarines within range of Syrian leader Bashar al-Assad’s forces. The move comes after US President Donald Trump stated that Russia should 'get ready' for missiles to be fired at its ally Syria, in response to an alleged chemical attack on the rebel-held town of Douma. EPA/BRITISH MINISTRY OF DEFENCE / HANDOUT CROWN COPYRIGHT, HANDOUT EDITORIAL USE ONLY/NO SALES HANDOUT EDITORIAL USE ONLY/NO SALES *** Local Caption *** 52893165](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/2HRZGUHR3FF4FF6EZPP2TNHYRM.jpg?smart=true&auth=e2b6c8280425d95de0032a7bd467f9365bc06348bf5d9c5dd895e91598ac8c0d&width=400&height=225)
The UK plans to raise the cap on warheads for its nuclear-armed submarines. EPA
The UK plans to raise the cap on warheads for its nuclear-armed submarines. EPA
Nuclear arsenals on the rise in reversal of post-Cold War disarmament
US and Russia have more nuclear warheads in deployment since last year