特朗普：没有必要对伊朗采取地面军事行动

Expresses that something is unnecessary; usually followed by a verb phrase describing the action that can be avoided.

The preposition 对 marks the target, followed by 采取 plus the actual action; this structure describes applying a specific measure toward someone or something.

Used in formal or written notices to state that action B is forbidden unless condition A (usually permission) has already been met.

Introduces reported speech: a person’s words or attitude are summarized by using 说, then a comma, then the reported clause.

Uses 认为 (“to believe/think”) to present the speaker’s or someone else’s belief about what follows.