The founder of Russia's Wagner group of mercenaries has warned the entire frontline will collapse if his troops in the Ukrainian city of Bakhmut do not receive more ammunition. Yevgeny Prigozhin, whose organisation has played a significant part in Russian military successes in recent months, said his ammo-starved forces were the 'cement' holding the frontline together and the last line of defence to win the war. 'Today, Wagner is the cement that, as I've said previously, is holding the Ukrainian army in place – grinding it down, destroying it and preventing it from deploying to other regions and occupying other...