Iranian diplomats have met their counterparts from the UK, Germany, and France for nuclear talks, for the first time since Israel launched attacks on Iran's nuclear facilities in June.

The strikes triggered a 12-day war, which also saw the US bomb a number of Iran's nuclear sites, bringing US-Iran nuclear talks to an abrupt end.

The three European powers that attended the talks, known as the E3, have threatened to reimpose sanctions on Iran if no progress is made towards negotiating a new nuclear deal by the end of August.

Iran's Deputy Foreign Minister Kazem Gharibabadi said they held a "serious, frank, and detailed" discussion, and agreed to continue consultations.

Gharibabadi said earlier this week that triggering sanctions would be "completely illegal".