Patriot missile battery and ground-based radar systems to bolster kingdom's defenses after September 14 attack on oil facilities blamed on Iran

Investigators still trying to determine if Tehran behind attacks on Saudi oil; Lawmaker urges president to go to Congress as strikes could lead to 'a medium to large-scale war'

Crown prince says strike on the heart of the kingdom's oil industry was a 'real test' of global will, urges international community to take a 'firm stance'

Kingdom is 5th country to be part of mission to secure vessels in Strait of Hormuz following series of attacks blamed on Iran

Wall Street Journal says Washington provided Riyadh with assessment of airborne weapons used in assault but Saudis say not enough evidence it was launched by Iranians

Critics say the arms sales would aggravate Riyadh's war and attendant humanitarian crisis in Yemen

Some soldiers, Patriot batteries arrive in kingdom as part of deployment that officials say will include fighter aircraft, missile defense systems

Lawmakers are concerned about high civilian causalities from Riyadh-led military campaign in Yemen and Trump administration's use of emergency protocol to approve $8 billion deal

Marc Schneier, a member of the kingdom's delegation to the US-led workshop, says Manama and Jerusalem may normalize relations by the end of 2019, but only if there's a peace deal

One person killed and seven others wounded in an attack by Iranian-allied Houthis that targets airport in Abha