请高手帮忙解析下这句英语

题目

请高手帮忙解析下这句英语
这来自一则VOA新闻的句子：
If Iran's nuclear program had not been at least capped, it was making progress that would have crossed Israel's red lines, I think, by next summer, and we very well could have had a military option being exercised.
这句话请原谅我几乎没看懂,at least capped, making progress, very well, had a military option being exercised…… 这些都是什么意思?

请好心的高手帮忙详细解析一下这句子吧,谢谢大家了!

答案

如果伊朗的核计划一点都没被限制,我觉得到第二年夏天它就会进展到越过以色列的底线,那时我们肯定会采取军事行动.
it was making progress that would have crossed Israel's red lines 这句话和 If Iran's nuclear program had not been at least capped是条件关系,if假设当时伊朗的核计划没有已经被限制,它会发展到越过以色列底线,if引导的是条件状语从句,没有递进的关系