"I have a Twitter account and I think it is a suitable tool for public diplomacy, connecting to people around the globe and voicing our ideas."
Rouhani had a resounding win but angered hardliners with his comments during the campaign, and they are likely to create problems for him.
The industrial disaster in north-eastern Iran is the most deadly in the Islamic Republic for decades.
New footage emerged of Iran's Qaher F-33 stealth fighter jet, which Western critics said was further away from its first flight than Tehran claimed.
The United States is expected to impose sanctions on multiple Iranian entities as early as Friday following Tehran's recent ballistic missile test.
Under Iran's settlement with the United States, France, Germany, Britain, Russia and China, Tehran agreed to shrink its nuclear program to satisfy the powers that it could not be put to developing atomic bombs.
President Hassan Rouhani sees Congress's vote to extend the sanctions act for 10 years as a violation of the nuclear deal.
The Russian president is meeting his Iranian counterpart, Hassan Rouhani, next week.
The recent Iranian elections changed the game. But the supreme leader remains firmly in control.
The cartoon contest, planned for June, will "incite hatred, racism, and discrimination," says UNESCO chief.
While in Paris, he will sign a contract to purchase 114 Airbus planes to add to Iran Air's fleet.
Make no mistake: We negotiated with terrorists, and the terrorists won.
An escalating dispute between Iran and the U.S. centers on the types of missile that the Islamic Republic is allowed to develop.
Ever since 1979, US leaders have tried to influence factions of the Iranian government, with little success.
The Iranian president, visiting Italy and France, should be called out on his attacks on dissenters.
Rouhani needs sanctions lifted quickly; Khamenei just ordered him to move slowly.
The agreement has invigorated the Iranian president's foes rather than strengthen his position.
Nuclear deal in hand and boasting that Iran saved Baghdad from falling, Rouhani projects self-confidence.
President Barack Obama and Prime Minister Netanyahu will discuss regional security issues.
Rouhani would be the first Iranian leader to visit France since 1999.