Diplomats from Iran and the U.S. are to meet again in Switzerland this week as the pace intensifies for a nuclear deal with Tehran, U.S. officials said Wednesday.

Top U.S. negotiator Wendy Sherman will travel to Zurich to meet with Iranian officials on Friday and Saturday, less than a week after leading face-to-face negotiations in Geneva, the State Department announced.

U.S. President Barack Obama on Wednesday met the wife of a Christian pastor who has been jailed in Iran for over two years, vowing to work to win his release.

Obama met the wife of Saeed Abedini during a visit to Boise, Idaho, where the president was selling his vision of a more equal America, unveiled in a State of the Union address on Tuesday.

Argentina's Jewish community pressed for "truth and justice" Wednesday, rallying at the site of a 1994 bombing in the wake of the suspicious death of the prosecutor investigating the attack.

Alberto Nisman was found dead of a gunshot to the head in his home Sunday, the day before he was to go before a congressional hearing to accuse President Cristina Kirchner of a cover-up.

Speaker Nabih Berri warned on Wednesday of the dangerouseness of Israel's strike on Syria's Quneitra region, saying that it committed a “strategic error.”

He said: “Through this crime, Israel placed Iran on its border.”

Spain said Tuesday it hopes Iran will join the global fight against Islamic extremism if Tehran reaches an agreement with world powers over its disputed nuclear program. 

"Iran is critically important in the region," Foreign Minister Jose Manuel Garcia-Margallo said on the sidelines of a business forum in Madrid.

The Mustaqbal parliamentary bloc strongly condemned on Tuesday the Israeli strike against the Syrian region of Quneitra, saying that “attacks against Arab land are unacceptable regardless of their causes.”

It said in a statement after its weekly meeting: “Political powers in Lebanon should prioritize protecting Lebanon and its people and avoid sliding towards regional dangers.”

Amid a public uproar, Argentine President Cristina Kirchner's government on Tuesday pledged its full backing of a probe into the suspicious death of a prosecutor who had accused her of obstructing his investigation of the 1994 bombing of a Jewish community center.

Alberto Nisman, 51, was found dead at his home Sunday from a gunshot to the head in what authorities have said appeared to be a suicide -- one day before he was to present evidence against Kirchner at a congressional hearing.

Rush-hour passengers in the busy subway of Iran's capital have brushed shoulders with a surprising commuter — President Hassan Rouhani.

Rouhani, along Foreign Minister Mohammad Javad Zarif and others in his government, took the subway and other mass transit in Tehran to work Monday. It was part of their effort to mark "National Clean Air Day."

Congress and President Barack Obama are on a fast track toward confrontation over sanctions on Iran.

A bipartisan group of senators is pushing a new round of penalties despite the president's warning that they would scuttle delicate talks underway to prevent Tehran from being able to develop a nuclear weapon.

More than 2,000 Iranians protested Monday outside the French embassy in Tehran, chanting "Death to France" and urging the ambassador be expelled because of a cartoon of the Prophet Mohammed.

The demonstration was in response to French satirical magazine Charlie Hebdo's use of the cartoon in an edition published a week after 12 people were killed by Islamist gunmen at its Paris offices.