(1)If a person in the United Kingdom or elsewhere contravenes subsection (2) he shall be guilty of an offence.
(2)A person contravenes this subsection if, in order to compel a person to do or abstain from doing any act, he—
(a)makes to a person a threat that any person will do an act which is—
(i)an offence mentioned in section 1(2) against a UN worker, or
(ii)an offence mentioned in subsection (2) of section 2 in connection with such an attack as is mentioned in subsection (1) of that section, and
(b)intends that the person to whom he makes the threat shall fear that it will be carried out.
(3)A person guilty of an offence under this section shall be liable on conviction on indictment to imprisonment for a term—
(a)not exceeding ten years, and
(b)not exceeding the term of imprisonment to which a person would be liable for the offence constituted by doing the act threatened at the place where the conviction occurs and at the time of the offence to which the conviction relates.