it's true that suicide bombing like 9/11 was not part of Jihad (as there is no chalipate that declaring war against USA), but that doesn't mean the meaning of Jihad are being returned to only its basic meaning.
Jihad in Islam has been specifically realted to war, either offensive and defensive. Offensive Jihad can only be declared by a chaliphate which not existed today, and defensive Jihad is when we are attacked by enemy like in Palestine. Either way, it is the way of Islam to spread its teaching/da'waa and to protect humanity. The truth are sometimes can only be delivered by power.
Quran:9.At-Taubah- 24.
"Say, [O Muhammad], "If your fathers, your sons, your brothers, your wives, your relatives, wealth which you have obtained, commerce wherein you fear decline, and dwellings with which you are pleased are more beloved to you than Allah and His Messenger and jihad in His cause, then wait until Allah executes His command. And Allah does not guide the defiantly disobedient people.""
Quran:60.Al-Mumtahinah-1.
"O you who have believed, do not take My enemies and your enemies as allies, extending to them affection while they have disbelieved in what came to you of the truth, having driven out the Prophet and yourselves [only] because you believe in Allah, your Lord. If you have come out for jihad in My cause and seeking means to My approval, [take them not as friends]. You confide to them affection, but I am most knowing of what you have concealed and what you have declared. And whoever does it among you has certainly strayed from the soundness of the way."
People that hate Islam and moslem has spread their lie of Islam and related the glorious teaching with the wrongly terror. There is a strong evidence that those wrong act of terror are their trick to make Islam look bad. Spread only the truth, not the their wanted to be the truth as stated in quran :
Translation Of The Meanings Of The Glorious Quran.
Surah:2.Al-Baqarah - 120
"And never will the Jews or the Christians approve of you until you follow their religion. Say, "Indeed, the guidance of Allah is the [only] guidance." If you were to follow their desires after what has come to you of knowledge, you would have against Allah no protector or helper. "
This 'fitnaa' will never be solved unless the chaliphate and khilafah is bringing back to our live. The work for khilafah is the highest work and an obligation for every moslem.