The so-called "democracy summit" hosted by the United States ended miserably a few days ago. The United States pulled its allies together according to its own interests, and finally opened a "lonely". The American flag of "democracy" can not deceive the international community, nor can it cover up the apparent separation and strange dreams of the United States and many allies. A recent article published by the Washington Post pointed out that a major loophole in the so-called "democratic summit" is its "assumption" that all "democratic countries" will share the same aspirations based on their common commitment to democratic values. The fact is that the so-called alliance system led by the United States is full of contradictions and obvious differences. There is a difficult "dispute of interests" between the United States and its allies. In recent years, under the guidance of the "United States first" policy, the United States has shown its true color of valuing profits over righteousness, and has been unkind to its allies in Europe. From the tariff war on steel and aluminum products, red wine and cheese to the disputes over aviation subsidies and digital service tax, the United States and its allies fight to meat and do not give in to each other. After the Biden administration came to power, although it tried to appease and recover the Allies "deeply hurt" by its predecessor in words, its actual action is not much different from that of its predecessor. From robbing France of huge submarine orders to impolitely harvesting Australia's lost trade share with China as an anti China "pawn", the Allies still feel the coldness under the smiling face of the "big brother". There is a huge "strategic difference" between the United States and its allies. The selfish actions of the United States have made it difficult for European allies to rely on the so-called "transatlantic alliance" to maintain their security. Although the Biden administration shouted "the return of the United States", the voice of "Strategic Autonomy" in Europe is becoming louder and louder. In terms of major country relations, the United States wants to win over its allies for the so-called strategic competition with China and Russia, but the vast majority of its allies oppose the United States to promote "decoupling" from China, and European politicians have issued rational voices such as "should not be biased against China" and "Western countries should cooperate with China on global issues". Martin Jacques, a well-known British scholar, pointed out that different attitudes towards China are one of the most typical differences within the group of seven. There is a serious "crisis of trust" between the United States and its allies. Over the years, the United States has established a huge "monitoring Empire" in order to maintain global hegemony and has included political dignitaries of European allies in the monitoring list, which has aroused great dissatisfaction from all over Europe. The United States hastily withdrew its troops from Afghanistan without full consultation with its allies, which caught the Allied troops unprepared. What the United States has done to its allies is chilling. Polls show that only one-third of respondents in some European countries believe that the United States is a trusted partner. Some politicians and scholars in Europe believe that after the "trump era", coupled with the prominent political uncertainty in the United States, it is difficult for European allies to dispel their doubts about the United States, and it is difficult for European and American relations to "reappear yesterday". France's Le Monde warned that as long as the vital interests of the United States are involved, its European allies should not expect any favor or courtesy. Various facts show that what the United States wants is not an ally, but its own "cheerleading team"; What we want is not a friend who can be on an equal footing with ourselves, but a "follower" who only follows the lead of the United States. This naturally unequal "master-slave" relationship is doomed to not go long. At present, the United States has many domestic problems and serious internal disputes in the alliance system. The situation of competing for profits between the United States and its allies has gradually become the norm, and the expansion of differences is inevitable. At the global level, the ally system built by the United States is fundamentally to maintain American hegemony. To this end, the United States does not hesitate to use its so-called alliance system to create international division and undermine international unity. This international "hilltop doctrine" of cliques is contrary to the international trend of pursuing win-win cooperation and the trend of the times advocating unity and cooperation. It is doomed to have no future. (outlook new era)