US Secretary of State Hillary Clinton says the United States believes Iran is becoming a military dictatorship. Speaking in front of students in Qatar today, Ms Clinton said Iran's elite military force, the Revolutionary Guard, is "in effect, supplanting the government." Clinton's comments come as she tours the Gulf region to promote efforts to increase pressure against Iran for its nuclear programme. On her next stop in Saudi Arabia she meets with Saudi King Abdullah as well as Foreign Minister Prince Saud al-Faisal to rally Arab support for new sanctions on Iran. The United States has been pressing the UN Security Council to impose a fourth set of sanctions on Iran, which has refused to stop enriching uranium.<br/><br/>AIR correspondent reports that the United States and its allies have been pushing for a fourth round of UN sanctions on Iran over its nuclear program and analysts say that situation has become urgent for them following recent Iranian claim of reaching 20 percent level enrichment.<br/>As part of US diplomatic efforts to engage various stakeholders in the region several U officials are touring the Middle East. While Secretary of State Hillary Clinton is in Riyadh after concluding her visit to Doha, the US army chief admiral Mike Mullen is in Israel after a meeting with Egypt’s president in Cairo. Another US official Bill Burns will Travel to Lebanon, Syria, Turkey, and Azerbaijan from tomorrow to hold talks. US deputy Treasury Secretary Neal Wolin is in UAE as part of his wider tour programme to gulf countries including Saudi Arab and Kuwait.<br/>Iran however says, its nuclear programme is peaceful and it is ready to negotiate without limiting its nuclear activity.