UK foreign minister calls seizure of tanker by Iran an act of state piracy; Tehran releases video of crew, in apparent bid to show they are unharmed

Riyadh says Tehran's behavior in Gulf is 'completely unacceptable' as Britain set to hold emergency meeting on spiraling crisis

British official rejects Tehran claim that ship had turned off transponder after hitting Islamic Republic's fishing boat, asserts its vessel had been operating legally

Amid soaring tensions in the Gulf, Revolutionary Guard captured the Stena Impero with 23 crew members aboard on Friday

While London accuses Tehran of 'dangerous' escalation, Islamic Republic says it's probing Stena Impero's alleged collision with a fishing boat, failure to respond to distress calls

Lebanese terror group commanders say forces being sent to south for possible conflict, as pressure on Tehran grows

Tehran appears to speak in two voices while explaining confiscation of British-flagged ship, as European powers urge the country to reverse its 'dangerous' course

Officials assert they are operating according to law to investigate accident in Strait of Hormuz, as London seethes over vessel's confiscation

Jeremy Hunt says Britain not weighing military options to secure ship's release as owner of second vessel detained by Iranian Guards says it has been set loose

Officials claim ship failed to 'respect maritime rules,' hours after Gibraltar court rules seized Iranian tanker can be held for 30 more days; UK says 'urgently seeking info'