If Iran’s newly elected president, Masoud Pezeshkian, was hoping for a honeymoon period after his inauguration last week, he must be sadly disappointed. Less than 12 hours after Pezeshkian was sworn in, an explosion, reportedly caused by a remotely controlled bomb, shook an Islamic Revolutionary Guard Corps (IRGC) compound in central Tehran. The target: Ismail Haniyeh, Hamas’s political leader, an honoured guest at the inauguration, and one of the Middle East’s most wanted. The bomb under the bed killed Haniyeh instantly. Honeymoon over.

The Haniyeh assassination, attributed to Israel and not denied in Jerusalem, has scrambled all those hopes. Pezeshkian finds himself in the eye of an international storm that analysts warn could lead to all-out war, engulfing the Middle East.

Infuriated by an audacious attack that humiliated him, his country and its elite armed forces, Khamenei – Iran’s ultimate authority – is said to have ordered preparations for direct military retaliation against

The insect glue, produced from edible oils, was inspired by plants such as sundews that use the strategy to capture their prey. A key advantage of physical pesticides over toxic pesticides is that pests are highly unlikely to evolve resistance, as this would require them to develop much larger and stronger bodies, while bigger beneficial insects, like bees, are not trapped by the drops.

The drops were tested on the western flower thrip, which are known to attack more than 500 species of vegetable, fruit and ornamental crops. More than 60% of the thrips were captured within the two days of the test, and the drops remained sticky for weeks.

Work on the sticky pesticide is continuing, but Dr Thomas Kodger at Wageningen University & Research, in the Netherlands, who is part of the self defence project doing the work, said: “We hope it will have not nearly as disastrous side-effects on the local environment or on accidental poisonings of humans. And the alternatives are much worse, which