THE heir to Jordan's throne will marry amid much fanfare, in a glittering ceremony that the country's leaders, long backed by the West as a stabilising influence in a volatile region, hope will reinforce local and global alliances. The 28-year-old Prince Hussein, named as heir by his father King Abdullah in 2009, will tie the knot with Saudi architect Rajwa Al Saif, 29, who hails from a prominent family with links to her country's ruling dynasty. Jordan has long relied on Western support to shore up its economy, one of the world's biggest per capita recipients of U.S and European…