et Tigranem:
Tigranes was the king of the nearby kingdom of Armenia and the son-in-law of Mithridates.
Tigranes had avoided direct contact with the Romans in previous wars because Mithridates had promised to
allow him to freely expand East while he busied himself with expanding West.
ei delatum:
There is an understood est with delatum. Ei here refers to
Pompey.
After putting an end to the pirate raids so quickly, he was given unprecedented power in the East through
the Lex Manilia.
Despite his victories,
Lucllus lost his command since some Romans thought
that he was deliberately prolonging the war
for his own benefit.