<span style="color: #222222;">The United States has killed 20 fighters from the Al-Shabab extremist group with an airstrike in central Somalia, a day after another airstrike in the area killed 35. <br />''<br />''The US military command for the African continent said, the attack near Shebeeley in the Hiran region targeted a training camp used as a staging area for attacks.<br />''<br />''The US has increased airstrikes against the al-Qaida-linked al-Shabab, Africa's deadliest extremist group, since President Donald Trump took office.</span>