Tit-for-tat attacks have breached taboo of direct strikes on each otheras territory but Tehran has no aimmediatea plans to retaliate

World leaders urged calm on Friday after Israel conducted a pre-dawn drone sortie over Iran following a cycle of tit-for-tat attacks that crossed an important red line that has for decades held the Middle East back from a major regional conflict.

There were tentative hopes late on Friday that the apparent strike attempt against an airbase near the city of Isfahan was sufficiently limited to fend off the threat of a bigger Iranian response and an uncontrolled spiral of violence between a nuclear power and a state with the capacity to develop nuclear weapons quickly.

Officials report casualties with some citing air strike on former anti-Isis unit known as Hashed al-Shaabi, which is now part of Iraqas regular military

An explosion has hit an Iraqi military base housing pro-Iranian paramilitaries, according to security sources.

The explosion on Friday night was at the Calso base, where former pro-Iranian paramilitary group Hashed al-Shaabi a now integrated into the regular army a is stationed, an interior ministry source and a military official told Agence France-Presse.

Israel launched a limited attack on Iranian soil on Friday morning, in the latest tit-for-tat between the two countries

• All our coverage of the Israel-Gaza war

Israel launched an attack on Iranian soil on Friday, in a tit-for-tat battle between the two foes, days after Iran launched an unprecedented strike on Israel with a barrage of drones and missiles, most of which were shot down. The Iranian strike was a response to an Israeli airstrike on the Iranian embassy compound in Damascus on 1 April.

The strikes have brought a long shadow war between the two sides into the open and also come against the backdrop of Iranas support for the Palestinian militant group Hamas, whose assault on Israel on 7 October triggered the invasion of Gaza.

Tit-for-tat attacks present Sunni monarchies with complicated choices over regionas future

Iranas missile and drone attack on Israel had, by the end of this week, become one of the most interpreted events in recent modern history. Then, in the early hours of Friday, came reports of Israelas riposte. As in June 1914, when Archduke Franz Ferdinand and his wife were assassinated in a moment that ultimately led to the first world war, these shots were heard around the world, even if few can agree conclusively on what they portend.

By one de minimis account, Tehran was merely sending a performative warning shot with its attack last Saturday, almost taking its ballistic missiles out for a weekend test drive. The maximalist version is that this was a state-on-state assault designed to change the rules of the Middle East. By swarming Israel with so many projectiles, such an assessment goes, Iran was prepared to risk turning Israel into a mini-Dresden of 1945 and was only thwarted by Israeli strategic defences and, crucially, extraordinary cooperation between the US, Israel and Sunni Gulf allies.

Majority leader Chuck Schumer says approving bill was aright thinga for Democrats and Republicans to do

The US Senate voted late on Friday night to approve the reauthorization of the controversial Fisa surveillance program, narrowly preventing its midnight expiration.

The reauthorization secures what supporters call a key element of the United Statesa foreign intelligence-gathering operation.

Vote makes Chattanooga factory first auto plant in US south to unionize via election since the 1940s

Volkswagen workers at the carmakeras Chattanooga plant in Tennessee have voted to unionize with the United Auto Workers, a historic victory for the union and the labor movementas efforts to expand to the southern United States.

The vote was the first union election to be held as part of the UAWas ambitious organizing drive aimed at unionizing 150,000 workers at non-union auto plants around the US.

With the panel selected, Donald Trumpas trial can enter its next stage, with opening arguments expected on Monday

Donald Trumpas hush-money trial gained momentum on Friday afternoon with the conclusion of jury selection.

Five alternate jurors were chosen on Friday, following Thursdayas proceedings when the 12 jurors and one alternate juror were picked.

A guide to Trumpas hush-money trial a so far

The key arguments prosecutors will use against Trump

How will Trumpas trial work?

From Michael Cohen to Stormy Daniels: the key players

Actor and wife Katherine Schwarzenegger dismantle 1950 Zimmerman house designed by architect Craig Ellwood

Chris Pratt has drawn ire from architecture aficionados after news broke that the actor and his wife, Katherine Schwarzenegger, had razed a historic, mid-century modern home to make way for a sprawling 15,000-sq-ft mansion.

Last year, the couple purchased the 1950 Zimmerman house, designed by the architect Craig Ellwood, in Los Angelesas Brentwood neighborhood for $12.5m. The residence, with landscaping by Garrett Eckbo a who has been described as the pioneer of modern landscaping a had previously been featured in Progressive Architecture magazine.