Thread: why must blocks be used when initializing in a switch?

why do I need the braces ({}) in the following segment? When I tkae them away I get this error

Code:

#include "Main.h"
#include "Node.h"
#include "Data.h"
#include "InternalNode.h"

InternalNode::InternalNode(Data * dat, Node * next):
myData(dat), myNext(next)
{
}

Node * InternalNode::Insert(Data& dat) {
	
	int result = myData->Compare(dat);
	switch(result) {
	case Smaller:
	case Equal:
		{Node * newNode = new InternalNode(&dat, this);return newNode;}
	
	break;
	case Bigger:
		myNext = myNext->Insert(dat);
		return this;	
		break;
	default:
		break;
	}

	return 0;
}

EDIT: Also is the way I passed in the reference to the constructor appropriate? I know there are better ways to do it, but I want this way for now as long as it will work