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

Hanegbi says Tehran understands Jerusalem 'means business,' says no need for concern about 'cautious' American response to Gulf crisis

Britain says priority is to deescalate, but that it is unacceptable for Tehran to threaten shipping in international corridors

Move could include calling on EU and UN to snap back penalties lifted under nuclear deal as Europe urges Tehran to release ship

Tehran avoiding outright conflict with powerful US forces, but strategy of prodding Western interests could lead to armed conflict with global consequences

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

Tensions have risen sharply in recent months with a string of incidents involving tankers and drones

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