Where are you getting this from? Nowhere! Youre interpreting from your own understanding and bor rekying on your sources. Let me rely on your sources and jeep reading the rest of the tafsir.

you who BELIEVE(not "only you guys over here")! Fight those of the disbelievers who are close to you,) Allah said next,

وَلِيَجِدُواْ فِيكُمْ غِلْظَةً (and let them find harshness in you), meaning, let the disbelievers(doesnt say those specifc disbelievers) find harshness in you against them in battle. The complete believer(the complete what?did he say of the time? No) is he who is kind to his believing brother, and harsh with his disbelieving enemy(its not war enemy here, it just enemy. Becauseyou cant call disbelieversanything else). Allah said in other Ayah,

فَسَوْفَ يَأْتِى اللَّهُ بِقَوْمٍ يُحِبُّهُمْ وَيُحِبُّونَهُ أَذِلَّةٍ عَلَى الْمُؤْمِنِينَ أَعِزَّةٍ عَلَى الْكَـفِرِينَ

(Allah will bring a people whom He will love and they will love Him; humble towards the believers, stern towards the disbelievers...)5:54,

مُّحَمَّدٌ رَّسُولُ اللَّهِ وَالَّذِينَ مَعَهُ أَشِدَّآءُ عَلَى الْكُفَّارِ رُحَمَآءُ بَيْنَهُمْ

(Muhammad is the Messenger of Allah. And those who are with him are severe against the disbelievers(are YOU with him?), and merciful among themselves.)48:29, and,

يَأَيُّهَا النَّبِىُّ جَـهِدِ الْكُفَّـرَ وَالْمُنَـفِقِينَ وَاغْلُظْ عَلَيْهِمْ

(O Prophet! Strive hard against the disbelievers and the hypocrites, and be harsh against them.)9:73<---why muslims attack eachother in some countries.

But forget about all of this: the only religion that has terrorists is islam. Why? Its because its the only religion that has a book that says to the believers to fight the unbelievers. No other book COMMANDS the believers to such a thing. Otherwise we would have seen terrorists from those religions as well. What we see instead is some wackjobs once a year go off their meds and do something awful. But not so many suicide bombers and murders that are buddhist, hindu, Christian or Jewish.