Russia-Ukraine war live: Blinken tells Lavrov US will support Kyiv for as long as it takes during meeting in margins of G20 summit

US secretary of state speaks to Russian foreign minister in what is believed to be their first one-on-one conversation since invasion of Ukraine

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Olena Zelenska, Ukraine's first lady, has tweeted about the overnight attack on Zaporizhzhia, writing:

Zaporizhzhia bravely resists the Russian aggressor. In retaliation, it attacks civilians. A high-rise building was deliberately hit last night. Three floors are completely destroyed. People died. We continue to search under the rubble. My condolences to the victims. We will not forgive this.

This is Martin Belam taking over the live blog in London. You can contact me at martin.belam@theguardian.com.