Talks to save the Iran nuclear deal were set to resume in Vienna on Thursday amid sky-high tensions, with Tehran preparing to ramp up uranium enrichment in response to an attack on a facility it has blamed on Israel.

Axar.az reports citing foreign media that after a positive first round of negotiations aimed at resurrecting the 2015 agreement scuttled by Donald Trump, Iran’s push towards enrichment levels needed for military use “puts pressure on everyone,” a European diplomat stated this.

The International Atomic Energy Agency announced Wednesday that Iran had “almost completed preparations” to begin enriching uranium to 60 per cent purity at the Natanz nuclear facility.