I found out that my brother Koby was killed while I was on a class trip. The bus stopped and the teacher got off the bus, and then the guides, and then the driver. When they got back on, they told us that two eighth graders were lost. The kids told me not to worry, that it couldn't logically be Koby because he was planning to go to a demonstration in Jerusalem and wouldn't have been in Tekoa [a suburb of Jerusalem] the afternoon the boys were killed. Then, one kilometer further on, they stopped the bus again and they asked me to get off. Only me. That's when I knew.

I kept screaming that I didn't agree that this could happen. I didn't want Koby to die. I wanted to come home from my trip and give him a big hug.

Koby was not just my brother. He was also my best friend. Sometimes we fought, but we were always friends afterwards. If I wanted to go to the mall, he would always come with me because I didn't like to go alone.

He would always be on my side with our parents. He would always make me happy. If I fought with my father, he'd come up to me and say "Don't worry. He'll get over it. Everything will be fine."

He always found the best in everything -- even the worst things. If there was a whole cup of oil that you couldn't drink and one drop of water, he would take that one drop of water. If someone died, he would be sad, but he said we have to go on in life.

No matter what would happen, he would always have a smile on his face.

It's true I'm the oldest kid in the house now. That's a lot of responsibility. Koby took care of Gavi, our youngest brother, no matter what else he was doing; he baby-sat for everyone, and he had to clean the most. He said that all the responsibility was hard.

I miss him already. No one can take his place.

Now I'm trying to figure out who died first, Koby or Yossi, and exactly how they died. I try to switch places with Koby in my mind so I would know exactly what happened. But they say the second the first rock hit him, his soul went right up to heaven.

I still haven't gone back to my life. I'm still stuck in the shiva, so I can't know what I am missing out there. It's nice that friends are staying with me and worrying about me. They say that they can't go out and be happy while knowing that I am at home crying. But I want people to go on with their lives instead of being sad for us. I don't want to ruin anybody's good time.

I want the world to know that it can't continue this way. There has to be peace, so nothing else like this will happen."