<p style="text-align: justify;"><span style="font-size: 1rem;">At least three explosions have been heard in the Ukrainian capital Kyiv, after air raid sirens went off.</span><br></p><div style="text-align: justify; "><br></div><div style="text-align: justify;">Mayor Vitalii Klitschko said residential buildings in the central Shevchenkivskiy area had been damaged.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Andriy Yermak, head of President Zelensky's office, said the attacks were from so-called kamikaze drones.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">A week ago, the capital was hit by several Russian missiles at rush hour, part of nationwide attacks which left 19 dead.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">The explosions on Monday happened at around 07:00 local time (04:00 GMT), said the BBC's Paul Adams, who is in the city.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Writing on the Telegram social media site, Mr Klitschko said they were in the Shevchenkivskiy district, which was hit by several strikes last week.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">He said rescuers were on site, and told residents to stay in air raid shelters.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Mr Yermak said on Telegram that the attack was from kamikaze drones, and that Ukraine needed more air defence systems "as soon as possible".</div><div style="text-align: justify;"><br></div><div style="text-align: justify; "><b>What are kamikaze drones?</b></div><div style="text-align: justify;"><br></div><div style="text-align: justify; "><b>&gt; Small aerial weapons, also known as loitering munitions, which are destroyed after striking the target</b></div><div style="text-align: justify;"><b><br></b></div><div style="text-align: justify; "><b>&gt; Unlike other drones - which are supposed to return home after dropping missiles - kamikaze drones are disposable</b></div><div style="text-align: justify;"><b><br></b></div><div style="text-align: justify; "><b>&gt; The name derives from the Japanese pilots who volunteered to crash their planes in suicide missions in World War Two</b></div><div style="text-align: justify;"><b><br></b></div><div style="text-align: justify; "><b>&gt; President Zelensky has previously accused Russia of using Iranian-made drones</b></div><div style="text-align: justify;"><b>line</b></div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Russian President Vladimir Putin said last week's strikes were in retaliation for the bombing of a key bridge linking Russia to occupied Crimea, which he blamed on Ukraine.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">It was the first time during the war that the centre of Kyiv had been directly targeted.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Earlier this week, Mr Putin said there was no need for more large-scale strikes on Ukraine.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Most designated targets had been hit, he said, adding that it was not his aim to destroy the country. BBC</div><div style="text-align: justify;"><br></div><div style="text-align: justify; ">bnbd24/kh</div>