Trump has ramped up pressure on USA allies to cut off purchases of Iranian oil, which accounts for 60 percent of the Islamic Republic's income.
"Along with France and Germany, the United Kingdom continues to believe [the JCPOA] is the best route to preventing Iran from getting a nuclear weapon", Mrs May said last month. The European Union has so far failed to submit to Iran its package of proposals to persuade the Islamic Republic to remain in the nuclear deal, Iranian Foreign Ministry Spokesman Bahram Qassemi said in a statement on Saturday.
Maryam Rajavi, the leader of the People's Mujahdeen of Iran (MEK) and president-elect of the NCRI, has been accused of being a ruthless leader of a cult which militarily supported Iraqi dictator Saddam Hussein, but supporters say she hopes to liberalise Iran through changes such as the abolition of the death penalty.
Their comments came after US Secretary of State Mike Pompeo this week gave his backing to the strikes and protests over economic woes, not least the collapse of the Iranian rial following the US withdrawal from the nuclear deal.
Earlier this month, Head of the Atomic Energy Organization of Iran Ali Akbar Salehi expressed a downbeat view of chances of saving the JCPOA, saying the (unofficial) proposals that Europeans have made fall below Iran's expectations.
More than 40 percent of Iran's population is unemployed while the mullah-led regime continues to fund Hamas terrorists in the Palestinian territories, Hezbollah in Lebanon, rebels in Yemen, Shiite militias in Iraq and President Bashar al-Assad in Syria.
U.S. sanctions against Iran tried but failed to create a rift between the people and the state, Supreme Leader Ayatollah Ali Khamenei said.
Bazaar merchants, mostly loyal to the leadership since the 1979 Islamic Revolution, are angry at what they see as the government's muddled response to the crisis, which they said had sent prices soaring and made trading nearly impossible.
"Both sides will try to use the combination of external and internal pressure to advance their causes", said Sanam Vakil, an adjunct professor teaching Middle East politics at SAIS Europe.
Ayatollah Khamenei had also called on Iranian authorities not to back down in the face of the United States, saying that the U.S. will not reduce its enmity if Iran backs down further but, in fact, it will become more insolent.
But Trump may be in no hurry to embark on negotiations that might bolster Iranian clerical leaders. The enemy's plan is to divide, but this design reflects its stupidity because the Islamic Republic is the entire nation, he said.
The leadership "might lean towards a compromise with America to preserve the establishment", said one official involved in Iran's nuclear talks with foreign powers.