Learn Farsi: خواه هوا خوب باشد خواه بد، ایمنی تیم را فدا نمی‌کنیم. - Whether the weather is good or bad, we do not sacrifice the team's safety.

The correlative structure khâh ... khâh ... (whether ... or ...) sets up a hypothetical condition or a situation with multiple possibilities. Because it expresses a possible condition rather than an established fact, it requires the subjunctive mood. That is why we use bâshad instead of the indicative ast.

Where is the verb in the second part of the clause, khâh bad?

It has been dropped to avoid repetition. The full phrase would be khâh bad bâshad. When using parallel structures like this in Farsi, it is very common and natural to omit the verb in the second half if it is identical to the first.

Could I use che ... che ... instead of khâh ... khâh ... for this sentence?

Yes, they mean the exact same thing and are used with the exact same grammatical structure. However, khâh ... khâh ... is slightly more formal and literary. In casual, spoken Farsi, you are much more likely to hear che havâ khub bâshad che bad.

Why do we need the object marker râ after imeni-ye tim?

This is a quick refresher on direct objects. The compound verb here is fadâ kardan (to sacrifice). The thing being sacrificed is imeni-ye tim (the team's safety). Because this is a specific, definite direct object (a noun phrase connected by an ezâfe), it must be followed by râ.