LONDON, July 21 (Reuters) - Shipping companies should not load or discharge cargo at Saudi Arabian ports and such activity may result in being targeted "in any location" by Yemen's Iran-aligned Houthi militia, according to an email sent to companies by the Houthis.The Houthis on Monday declared a naval blockade against Saudi Arabia, opening a potential new front against the United States in its war with Iran and raising the threat to global energy supplies and trade beyond the Gulf.

CAIRO (AP) — Yemen's Iranian-backed Houthi rebels on Monday announced they are imposing a maritime embargo against Saudi Arabia in retaliation for a blockade on Yemen and a recent…

The Houthis "declare a maritime embargo against the criminal Saudi enemy, based on the equation of 'an eye for an eye', effective immediately upon the issuance of this statement,"…