Regional rivals Saudi Arabia and Iran have ratcheted up their rhetoric yet again, as the Saudis herald the upcoming visit of U.S. President Donald Trump to the kingdom as a positive sign for them and a negative one for the Iranian regime.

Last week Iran responded angrily to Saudi Arabia’s defense minister for criticizing the regime, sending a letter to the United Nations Security Council and accusing him of violating the UN Charter. The letter said Saudi Arabia had “dangerous ambitions in the region and beyond.”

To drive the point home on the domestic front, Iran’s defense minister, Brigadier General Hossein Dehqan, warned Riyadh against any “ignorant” move against his country, and declared that nowhere in Saudi Arabia other than the Muslim holy sites would remain intact in response, the Iranian Tasnim News Agency reported. The Saudis “think they can do something [against Iran] because they have an air force,” Dehqan said.

In the interview Saudi defense minister and deputy crown prince Muhammad Bin Salman gave to a local television network he ruled out any dialogue with Tehran and said the Iranian regime wanted to dominate the region. He warned that any battle would occur “in Iran rather than in Saudi Arabia.”

The prince’s comments met with approval at home.

“Muhammad Bin Salman is hitting Iran and its tails. A very good statement before the visit of Trump. Oh Iranians, we will destroy you with God’s permission,” tweeted one Saudi user. In what could be seen as an orchestrated campaign by the Saudi government, around 40,000 tweets were posted using the hashtag “Muhammad Bin Salman is shaking Iran” # محمد_بن_سلمان_يزلزل_ايران following the Iranian comments. Saudi users praised the prince who they said “scared Iran and made them cry” with his comments. Some joked “the Mullah’s regime in Iran know that entering in a war with Saudi means disappearing,”

“The relations between Muhammad Bin Salman and President Trump scared Iran,” tweeted one person, while others said that Iran was humiliated by the summit that would happen in Riyadh between Trump and Muslim leaders but without any Iranian representation.

#محمد_بن_سلمان_يزلزل_ايران محمد بن سلمان يوجع ايران واذنابها .. كلام جداً كبير هذا قبل زيارة ترامب يا ويلكم يا مجوس بإذن الله راح ندوسكم pic.twitter.com/TEpCLbdbLs — ثموؤؤور (@tibrahimm052) May 8, 2017

The alliance of Saudi Arabia and America will deter Iran and spoil its plots. Muhammad Bin Salman is hitting Iran and its tails. A very good statement before the visit of Trump. Oh Iranians, we will destroy you with God’s permission.

The U.S. president will arrive in Saudi Arabia at the end of May before heading to Israel and the Vatican. Analysts see chief among the reasons for Trump’s meeting in Saudi Arabia and Israel is the shared position on Iran and its regional ambitions. Trump has long criticized the previous administration’s nuclear accord struck between Iran and western nations, something both Saudi Arabia and Israel have also been very critical of.