By Nayera Abdallah and Timour Azhari
DUBAI, July 20 (Reuters) - Yemen's Iran-aligned Houthis said on Monday they were imposing a naval blockade on Saudi Arabia, a move that threatens to escalate the conflict in the region and disrupt global energy supply and trade beyond the Gulf.
The Houthis' armed forces in a statement said they were declaring "a maritime embargo against the criminal Saudi enemy, based on the equation of 'an eye for an eye', effective immediately".