KYIV, Ukraine —

A Ukrainian security official told the Associated Press Sunday that Kyiv has destroyed more than 40 Russian planes in a drone attack deep in Russia’s territory.

The official, who spoke on condition of anonymity to disclose operational details, said the attack took over a year and a half to execute and was personally supervised by Ukrainian President Volodymyr Zelenskyy.

THIS IS A BREAKING NEWS UPDATE. AP’s earlier story follows below.

Ukraine will send a delegation to Istanbul for a new round of direct peace talks with Russia on Monday, President Volodymyr Zelenskyy said, even as Russia pounded Ukraine with a missile strike that killed 12 soldiers and the biggest drone assault of the three-year war.

In a statement on Telegram, Zelenskyy said Sunday that Defense Ministe

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