Ukraine’s military commander in charge of the country’s drone warfare program urged the US and NATO countries alike on Wednesday to learn from Kyiv’s use of the technology on the battlefield so in the future there are not “hard questions from your children [about] when [their] father will come back.

The need to adequately arm Ukraine’s military is pressing as Russia looks to drive forward its summer offensive and pounds Ukrainian cities with hundreds of drones and ballistic and cruise missiles.

In St Petersburg, operations at Pulkovo Airport were temporarily suspended around 5am, delaying at least ten flights, according to Rosaviatsiya.

Unmanned vehicles dominate the battlefield in Ukraine—laying mines, delivering ammunition and medication, even evacuating casualties.

Cyber specialists of the Defense Intelligence (HUR) have attacked the Russian company Gaskar Integration, one of the largest suppliers of drones for the Russian army, according to sources within Ukrainian intelligence.

Over the winter, Brave1, a government defense-technology hub tasked with getting new capabilities field-ready, reported that Ukrainian troops were trialling the Black Widow 2. The system, which also measures roughly one meter in length, has a reported payload of three kilograms and a range of 10 kilometers.

The Russians have fired thousands of Iranian-designed, 11-foot-long Shahed drones into Ukraine, while the Ukrainians have built their own long-range drones that can attack targets over 700 miles away.

Russia’s Ministry of Defence has released footage of a powerful drone strike on a Ukrainian radar installation in the Chernihiv region. Kamikaze drones flattened the site, dealing a strategic blow to Ukraine’s battlefield operations.