 Following an abortive trip to Spain by Prince Charles and the Duke of Buckingham to propose a marriage between Charles and the Spanish Infanta Maria Anna of Spain, the two switched positions and began advocating war with Spain.They persuaded King James to summon a new Parliament which would be invited to advise on foreign policy.The resulting Parliament of 1624 was, at least in the short run, a triumph for Charles and Buckingham, as it strongly advocated war with Spain.