Chelsea have won five major European trophies - a Champions League, two Europa Leagues and two Cup Winners' Cups.
Eden Hazard scored two goals and made another to help Chelsea thump London rivals Arsenal in Baku and win the Europa League.Victory gave Blues boss Maurizio Sarri the first trophy of his managerial career and ensured the Gunners will miss out on next season's Champions League.
With only about 5,000 fans from both sides able to make it to Azerbaijan, there was an eerie atmosphere at the Olympic Stadium in Baku, which appeared less than half full.
That was the surreal setting for a match played 2,500 miles away from both teams' home, and the game itself was devoid of action before the break before bursting into life early in the second half.
Former Arsenal striker Olivier Giroud broke the deadlock when he met Emerson's clipped cross with a powerful near-post header that zipped past Petr Cech.
Cech, also facing his old side and playing the final match of his career, could do nothing about Chelsea's second goal either, with Pedro sweeping home a Hazard cross.
Hazard made it 3-0 from the penalty spot soon after, sending Cech the wrong way after Ainsley Maitland-Niles fouled Giroud.Substitute Alex Iwobi briefly gave Arsenal hope with a powerful first-time strike moments after coming on.
But Hazard quickly made sure of victory, playing a one-two with Giroud and firing home Chelsea's fourth goal.
The Belgium forward said after the game it was likely to be his Chelsea "goodbye" as he continues to be linked to Real Madrid.
Chelsea's triumph brought them their fifth European title and their first since they won the Europa League in Amsterdam in 2013.
An emotional Sarri celebrated with his players on the pitch, but his future remains in doubt despite ending his first season at Stamford Bridge on a successful note.
Hazard's departure appears rather more certain, and his performance ensured this game will be at least partly remembered for footballing reasons, after being overshadowed beforehand by politics, plus travel and ticketing issues.
The Chelsea fans who did make it to the game - via train, plane and even taxis - were rewarded by a typically effervescent display from a player who has sparkled for them over the past seven years.
Giroud deserves credit too, particularly for his finish for the opening goal that led to Arsenal's collapse.
But it was Hazard who made the difference, as so often this season and in previous years.