What is the United States doing?
The US President has added a further 62 names to the list of 27 suspected terrorist associates announced in October.
The list includes organisations government classes as terrorist groups, their leaders, their supporters or non-profit groups seen as fronts - witting or otherwise - for the flow of money to suspected terrorists.
Investigators will also examine the records of all transactions relating to these assets.
The names on Bush's October list
Groups:
Al Qaida/Islamic Army
Abu Sayyaf Group
Armed Islamic Group (GIA)
Harakat ul-Mujahidin (HUM)
Al-Jihad (Egyptian Islamic Jihad)
Islamic Movement of Uzbekistan (IMU)
Asbat al-Ansar
Salafist Group for Call and Combat (GSPC)
Libyan Islamic Fighting Group
Al-Itihaad al-Islamiya (AIAI)
Islamic Army of Aden
Individuals:
Osama bin Laden
Muhammad Atif (aka Subhi Abu Sitta, Abu Hafs Al Masri)
Sayf al-Adl
Shaykh Sai'id (aka Mustafa Muhammad Ahmad)
Abu Hafs the Mauritanian (aka Mahfouz Ould al-Walid, Khalid Al-Shaqiti)
Ibn Al-Shaykh al-Libi
Abu Zubaydah (aka Zayn al-Abidin Muhammad Husayn
Tariq)
Abd al-Hadi al-Iraqi (aka Abu Abdallah)
Ayman al-Zawahiri
Thirwat Salah Shihata
Tariq Anwar al-Sayyid Ahmad (aka Fathi, Amr al-Fatih)
Muhammad Salah (aka Nasr Fahmi Nasr Hasanayn)
Charities:
Makhtab Al-Khidamat/Al Kifah
Wafa Humanitarian Organization
Al Rashid Trust
Alleged front:
Mamoun Darkazanli Import-Export Company