The first Sudanese mercanries in Yemen arrived in the southern port city of Aden in mid-October 2015. Sudan's President Omar al-Bashir has been dubbed "president of the mercenaries" for accepting over $2.2 billion from Saudi Arabia and Qatar in order to provide canon fodder for the Saudi ground war in Yemen in the form of thousands of young Sudanese troops, but he's threatening revolt. To escape his untenable position, he is reportedly seeking help from Putin.