Riyadh hopes to rally support against its arch-rival over attacks on oil installations

Riyadh's foreign minister says attacks on oil installations must be addressed with 'firmness and determination'

National security adviser, who will next month discuss Iran with Israeli, Russian counterparts in Jerusalem, takes tough line after Trump says US 'not looking to hurt Iran at all'

US National Security Advisor John Bolton and Russian counterpart Nikolay Patrushev expected to discuss Syria, Iran with Meir Ben-Shabbat

In region, Bolton says Tehran has only one reason to boost uranium enrichment -- 'to reduce the breakout time to produce nuclear weapons'

New York Times says president asked GOP mega-donor to assess his hawkish adviser during a recent Republican Jewish Coalition meeting

John Bolton visit coincides with regional summits in Saudi Arabia, as US and Arab allies seek to further isolate Iran

Iranian FM says Tehran not seeking conflict; Hossein Salami indicates the two rivals are locked in a full-scale confrontation in the intelligence battlefield

With 2020 election approaching and little appetite in the GOP for open conflict with Tehran, the political pitfalls ahead for the first-term Republican president could be serious

Top Iranian general warns Tehran's missiles can 'easily reach warships' as Middle East tensions escalate and amid fears a miscalculation could end in war