Under duress after Younghusband invaded them. Later in 1918 Britain China and Tibet signed another treaty contradicting the earlier one which was the
Treaty of 1906 incidentally which you refer.
How many native English speakers understand what the term surzainity means, let alone Tibetan speakers ?
In many respects you're quite right and UK has more responsibility for the crap in Tibet now than any other country bar China itself.
The British forced treaties on the Chinese to buy Opium.
Does that make it right in 2008 ?
By that rationale Stumason UK should immediately re-invade China and enforce the honouring of Opium sales.
[edit on 27-3-2008 by sy.gunson]