Here are the latest developments involving negotiations between Iran and world powers in Vienna over the Islamic Republic's contested nuclear program (all times local EDT):
Britain's Prime Minister, David Cameron, described the deal with Iran as historic, saying it "secures our fundamental aim — to keep Iran from developing a nuclear weapon — and that will help to make our world a safer place."
He said the deal required leadership, courage and determination and that it was time to move forward and put it into place.
Cameron said Iran will reap economic benefits, so long as it delivers on everything it has agreed to do.
Pakistan's foreign ministry welcomed the agreement that was reached between Iran and world powers in Vienna.
In a statement released Tuesday, the ministry said Pakistan had consistently maintained that the Iran nuclear issue should be peacefully resolved through dialogue. Noting Pakistan's position as a neighbor to Iran, the foreign ministry said such confidence-building measures "auger well for peace and security in our region."
Iranian President Hassan Rouhani has dismissed claims that the Islamic Republic sought to make atomic weapons under its nuclear program.
Speaking live in a nationwide televised address Tuesday, Rouhani said: "Iran has never sought to manufacture a nuclear weapon and will never seek to manufacture a nuclear weapon."
He added: "The whole world knows very well that manufacturing a nuclear bomb ... is considered forbidden."
The comment came during a speech in which Rouhani sought to appease hard-liners about the merits of the nuclear deal agreed to in Vienna between the Islamic Republic and world powers.
Britain's Foreign Secretary Philip Hammond says the deal announced Tuesday will impose strict limits and inspections on Iran's nuclear program.
Hammond said in a statement that granting the International Atomic Energy Agency access to verify Iran's adherence to the agreement will provide confidence that its nuclear program is peaceful.
Hammond said world leaders recognize that there will be concerns in the region.
"We will maintain our clear position in support of the Gulf states and against Iranian interference in their internal affairs," he said.
Hammond said he hopes and expects that the agreement will herald change in Iran's relations with its regional neighbors and the world. He said Iran will be encouraged to play a constructive role, "particularly in the struggle against violent Islamist extremism."
The spokesman for Iraqi Prime Minister Haider al-Abadi says the nuclear deal announced Tuesday between Iran and world powers in Vienna will be "a catalyst for regional stability."
Saad al-Hadithi tells The Associated Press that the landmark agreement, designed to avert the threat of a nuclear-armed Iran, is "an important step" and will lead to better unity in the fight against terrorism.
A U.S.-led coalition is conducting airstrikes in Iraq against the Islamic State militant group while neighboring Iran provides extensive logistical support on the ground. Despite their shared interests in defeating the Islamic State group, coalition nations have not worked directly with Iran, Iraq's biggest ally, even as negotiations were underway in Vienna.