the arrangements specified in the Convention set out in Part 1 of the Schedule to this Order and the Protocol in Part 2 of that Schedule have been made with the Principality of Liechtenstein;

the arrangements have been made with a view to affording relief from double taxation in relation to income tax, corporation tax, capital gains tax and taxes of a similar character imposed by the laws of the Principality of Liechtenstein and for the purpose of assisting international tax enforcement; and

it is expedient that the arrangements should have effect.