He frequently assisted Philip in conducting negotiations with foreign powers, and he was an arbiter in tournaments and on all questions of chivalry, where his wide knowledge of heraldry was highly useful.
At Campo Formio he showed himself the first diplomatist of the age, and the arbiter of the destinies of Europe.
The arbitrator ex compromisso sumptus, like the judicial arbiter, was expected to take account of equitable considerations in coming to a decision.
If it was Richelieu and not the pope who was the real arbiter of destinies from 1624 to 1642, Urban VIII.
20, 1700), the Swedish chancellor, Benedict Oxenstjerna, rightly regarded the universal bidding for the favour of Sweden by France and the maritime powers, then on the eve of the War of the Spanish Succession, as a golden opportunity of " ending this present lean war and making his majesty the arbiter of Europe."