The unverified document lays down a framework which could permit Beijing to deploy forces to protect the safety of Chinese personnel and major projects in Solomon Islands.
Wale said that any sensible person would recognize that Prime Minister Manasseh Sogavare's actions on this matter are threatening national unity.
"How is such a decision in the best interest of the nation?" the opposition leader questioned.
He said that these actions show a disregard for the public's views and are causing the public to lose trust in the government.