The US is expected to reach a statutory debt ceiling next week, which could see the country defaulting on its obligations unless preventative steps are taken, Treasury Secretary Janet Yellen warned on Friday in a letter to House Speaker Kevin McCarthy.

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The city has been hit three times using US-made HIMARS systems, according to local authorities At least six people were killed and a further 11 injured in Donetsk on Tuesday, when the Russian city was repeatedly subjected to missile attacks by Ukrainian forces.