True, but the Japanese government is accountable to Japanese voters and their business community. If they see Trump reneging on or twisting an agreement they'll be more likely to blame Trump than the LDP. He's not popular there nowadays except among Sanseito members.
1. "Specific numbers about trade balance' isn't a negotiation term. It might be a prior that feeds into your position in negotiation, but it's not an outcome.
2. He lies when his lips move. When you're dealing with a pathological liar, there's no reason to believe anything he says that paints him in a good light - until it's been independently confirmed.
