Ronin ending explained (spoilers)

[Timothyfap]

Gregor attempts to sell the briefcase to the Russians. But instead of paying him, they decide to just shoot him. Gregor however, sets up a plan that if he doesn't make contact with a sniper aiming their rifle at one of the Russian's ice-skating protege, the sniper will open fire and kill her. The Russian shoots Gregor in the head and the ice skater gets shot and killed. As the Russians try to flee, being tailed by Sam and Vincent, Seamus shoots both the Russians and tries to escape with the case. Dierdre (persuased by Sam) drives away and leaves Seamus behind. Sam follows Seamus into a room, where Seamus shoots Sam in the arm. Vincent thens shoots Seamus and saves Sam's life. The final scene shows Sam and Vincent sharing a last conversation together. They mention the rules and Sam leaves with the mewspaper man he met earlier (leaving the viewer to assume he still works for the CIA). Vincent leaves and narrates rule number three.