Joseph looked at the report about the two British spies with a very calm demeanor—if the British weren't up to something, he might indeed feel a bit uneasy.
The spies were personally captured by Isaac's team.
Because the intelligence was very detailed, the two were knocked unconscious by agents in Tunisia before they had a chance to commit suicide by poison.
Isaac also found many useful documents in their secret hideout, basically confirming their identities as spies without the need for interrogation.
"Aside from their being from the British Naval Intelligence, is there any other useful information?" Joseph put down the thin report and looked at Isaac.
Isaac replied with some helplessness, "Your Highness, those two only received orders, they don't even know who the officer issuing the commands was. After that, they were stuffed onto a merchant ship and landed at the Port of Tunis, disguised as Italian businessmen."