Hawkish American Senator Lindsey Graham has says the US should mull bombing Iranian oil refineries if Tehran continues boosting its nuclear enrichment to higher grades.

Axar.az reports citing CNN.

“It is now time for the US to put on the table an attack on Iranian oil refineries if they continue their provocations or increase nuclear enrichment,” said the veteran Republican lawmaker from South Carolina on Twitter Saturday.

“Iran will not stop their misbehavior until the consequences become more real, like attacking their refineries, which will break the regime’s back,” added the fervently pro-Israel Senator, who sits on the Senate foreign Relations Committee and has established himself as a leading detractor against the Islamic Republic.

Back in June, Graham also blurted provocative rhetorical attack against Tehran following Iran’s shot down of a US spy drone that intruded into Iranian territorial waters in the Persian Gulf, threatening that the Islamic Republic should prepare for “severe pain.”

It is customary of US lawmakers financed by the powerful pro-Israel lobby groups in the country to harshly criticize Iran or sponsor legislative measures against the Islamic Republic to prove their loyalty to the regime occupying Palestine.

In the aftermath of Iran’s shot down of the US surveillance drone, US President Donald Trump claimed that he withdrew an order to strike Iran in the last minute citing potential of the resulting loss of lives. Iranian authorities, however, had warned that any US strike against the country would be severely retaliated.

The warmongering rhetoric by Graham, who is closely allied with Trump, is nothing new. Last June, he also suggested that the United States should take military action against Venezuelan President Nicolas Maduro so countries opposing the US would be intimidated and surrender to Washington's demands.