Al-Shabaab Twitter avatar.

Just in time for tonight's Presidential debate on foreign policy, Al-Shabaab, a Somali group which reportedly merged with al Qaeda in early 2012 has issued series of apparently threatening tweets on its Twitter account.

The posts were directed at the British government and referenced the "extradition and trial of Sheikh Abu Hamza Al-Misri." Al-Misri is a one-armed cleric who will soon be extradited from the U.S. to Great Britain. He will face charges connected to a hostage incident that occurred in Yemen in 1998 as well as charges related to fomenting jihad abroad and attempting to create a jihadi training camp in Oregon in 2001.

After referencing Al-Misri's pending extradition, Al-Shabaab tweeted the following declarations:

We remind the British government that we're a nation that doesn't tolerate oppression & their actions will be repaid in retaliatory measure

— HSM Press Office (@HSMPress) October 22, 2012

Britainwill pay the heftiest price for its brazen role in the war against Islam and endless brutality against innocent Muslims. — HSM Press Office (@HSMPress) October 22, 2012

The nightmare that surreptitiously looms on British shores is bound to eclipse the horrors of 7/7 and 21/7 combined insha –allaah. — HSM Press Office (@HSMPress) October 22, 2012

The "horrors of 7/7 and 21/7" likely reference terrorist attacks that occurred in London on July 7 and July 21, 2005. The attacks killed more than 50 civilians and injured 700.

Al-Shabaab also addressed American Muslims:

It is time especially for the Muslims in the United States to make their stand, for such a level of vulnerability is painfully insufferable.

— HSM Press Office (@HSMPress) October 22, 2012

Al-Shabaab's Twitter bio does not mention al-Qaeda. It describes the group as "an Islamic movement that governs South & Cen. Somalia" and states it is also part of "the global struggle towards the revival of Islamic Khilaafa."