Claim you are an undercover policeman (fir)

From Create Your Own Story

“I’m a cop,” you say. “I’ve come to investigate Anthony’s illegal arms dealing.”

“A cop?” Demetri asks. “You don’t have a badge, officer.”

You panic and desperately try to think of a response. “Well,” you mutter, “That’s, uh, that’s because I’m, uh…”

“Dammit,” Demetri shouts. “I don’t have the patience for your bullshit. Tell me what you are really here for.”

Explain that you are a Russian arms smuggler
Tell him the truth