Complex sentence: He then explains to the president that he is not ready to carry the shield, to which the president accepts, but states that he has a feeling shortly, "this country's going to need to call on you for something much bigger...".
Split into simpler sentences: He then explains to the president that he is not ready to carry the shield. The president accepts, but states that he has a feeling that "this country's going to need to call on you for something much bigger...".